package com.zy.iterator;

import java.util.Iterator;
import java.util.List;

public class OutPutImpl {

	//学院集合
	List<College> collegeList;

	public OutPutImpl(List<College> collegeList) {

		this.collegeList = collegeList;
	}
	//遍历所有学院,然后调用printDepartment 输出各个学院的系
	public void printCollege() {

		//从collegeList 取出所有学院, Java 中的 List 已经实现Iterator
		Iterator<College> iterator = collegeList.iterator();

		while(iterator.hasNext()) {
			//取出一个学院
			College college = iterator.next();
			System.out.println("=== "+college.getName() +"=====" );
			printDepartment(college.createIterator()); //得到对应迭代器
		}
	}


	//输出 学院输出 系

	public void printDepartment(Iterator iterator) {
		while(iterator.hasNext()) {
			Department d = (Department)iterator.next();
			System.out.println(d.getName());
		}
	}

}
